Create manifest on new entities.
Duplicate checking (now it's REALLY a set :) ).
Got entity.find() working.
Added class functions, get/set/attr, and upped the version.
Handle adding existing Entities.
Threw Entity under the entropy namespace.
While we're at it, let's make Entities arrays too.
Added entity.list().
Improve consistency of S().
Better handling of Entity.toString().
Entity.has().
Children functions.
Fixed IDs of Entities without IDs.  ...What?
Added entity.remove() (untested).
Improving what happens when you Entity.get(n).
entity.make -> entity['.make'].
Restrict stuff.
We be strict up in here.
name -> key in the manifest, and only deep copy objects if we can't find them in the manifest.
Odd bug, but only with huge object.